1.

The monomer of the polymer [-CH_(2)-overset(CH_(3))overset("|")underset(CH_(3))underset("|")"C "-CH_(2)-overset(CH_(3))overset("|")underset(CH_(3))underset("|")"C "-CH_(2)-]_(n)

Answer»

`H_(2)C = C(CH_(3)) _(2)`
`(CH_(3)) _(2)C = C(CH, _(3)), _(2)`
`CH_(3)CH = CH.CH_(3)`
`CH_(3)CH = CH_(2)`

Answer :A


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